Description

dbx_compare() is a helper function for
dbx_sort() to ease the make and use of the custom
sorting function.

Parameters

row_a

First row

row_b

Second row

column_key

The compared column

flags

The flags can be set to specify comparison
direction:

DBX_CMP_ASC - ascending order

DBX_CMP_DESC - descending order

and the preferred comparison type:

DBX_CMP_NATIVE - no type conversion

DBX_CMP_TEXT - compare items as strings

DBX_CMP_NUMBER - compare items numerically

One of the direction and one of the type constant can be combined with
bitwise OR operator (|).

Return Values

Returns 0 if the row_a[$column_key]
is equal to row_b[$column_key], and 1
or -1 if the former is greater or is smaller than the
latter one, respectively, or vice versa if the flag
is set to DBX_CMP_DESC.